An apple with a heart and Steve Jobs' name written on it is placed in front of a small memorial in his honour in San Francisco, California, on October 6, 2011. Apple Inc co-founder and former CEO Steve Jobs, counted among the greatest American CEOs of his generation, died on October 5, 2011, at the age of 56, after a years-long and highly public battle with cancer and other health issues. (Reuters/Kimberly White)

An apple with the word 'bye' carved into it placed outside an Apple store after it was left by a man commemorating the life of Apple Inc's founder and former chief executive Steve Jobs, October 5, 2011 in Pasadena, California. Apple's visionary co-founder died from cancer Wednesday at 56, a premature end for a man who revolutionized modern culture with ubiquitous inventions like the iPod and the iPad. (AFP/Robyn Beck)

A message honoring Steve Jobs is scrawled on a blacked-out window at an Apple Store, closed for the day on October 6, 2011, in Seattle. Jobs, the Apple founder and former CEO who invented and masterfully marketed ever-sleeker gadgets that transformed everyday technology, from the personal computer to the iPod and iPhone, died Wednesday. He was 56. (AP Photo/Elaine Thompson)

This picture taken on October 6, 2011 shows a Chinese man lighting candles to pay tribute to Steve Jobs outside an Apple store in Beijing. The death of Apple visionary Steve Jobs has left huge shoes to fill, with successor Tim Cook inheriting a company with fabulous products but also facing unrelenting assault from agile competitors. (AFP)